Floor machine



July 26, 1332. F. w. YUTZLER-ET AL FLOOR MACHINE Original Filed D013. 8, 1927 I52 0 6 rflfof Patented July 26, 1932 UNITED STATES FRED W. YU'I'ZLER AND GORDON E.

KENT COMPANY INC., 015 ROME,

NEW YORK, A CORPOBATION"OF NEW YOB-K;-

FLOOR MACHINE KENT, or ROME, nnw on'xfnssrenons m Original application filed October 8, 1927, Serial No. 224,814. Divided and this application filed November This invention relates particularly to machines for scrubbing, polishing and other work on floors and other fiat surfaces, and has for one of its objects the provision of convenient means for detachably connecting the brush or Working member of the machine, to the drive shaft.

The present application is a division of our earlier application Serial No. 224,814 filed October 8, 1927.

A further object of the invention is to provide an improved form of connection between the brush or working member, and the drive shaft, that will permit the working member to extend into the machine, so as to reduce the height of the machine to a minimum, and also provide a simple and convenient detaching means for the working member.

A further object of the invention is to provide means for intercepting lubricant which may escape from the gear casing of the machine, and preventing the same from leaking onto the floor or other surface on which the machine is operating.

Other objects of the invention and the features of novelty will be apparent from the following description taken .in connection 7 with the accompanying drawing, in which Figure 1 is a side elevation of a machine embodying our invention, certain parts being shown in section;

Fig. 2 is a plan view of the plate by which the working member is connected to the driving member of the machine; and

Fig. 3 is a bottom plan of the driving flange to which the working member is attached.

Referring to the drawing, 10 indicates a casing or housing on which there is arranged an electric motor 12 which through suitable gearing, not shown, drives the vertical shaft 38. A partition 17 is arranged in the casing 10 and has a downwardly projecting boss 18 through. which the shaft 38 projects. The shaft 38 has its lower end tapered and, on this tapered portion, a flange 39 is secured by means of the nut 40 and the key 41.

A rotatable brush or working member 16 is arranged in the casing 10, immediately below the partition 17, and has a central be; retained in their opening 16 into which the bossshaft 38 project.- 4 1 Springfingers 42 are secured; on the underside of the fiange 39, by rivets 43, or in any other suitable manner. A centrally dished or cupped plate, or disk, 44, has' its is and the peripheral portion secured on the brushor 7 working member '16,rbyscrews 50 and the dished portion of this plate fits the opening 16 as indicated at 5 1. 3 I

The flange 39 has a central boss 52, :on

its lower side, and theplate'44 has a central opening'53 which engages the boss 52 and serves to-center the brush or working" i member 16. The plate 44 is also provided with arcuate openings45 ,v-,arranged about the opening 52 and of such'length, circumferentially,-that thevfingers42 are adapted to pass through them. r a When the working member 16 is placed?!" in the position shown in Fig. 1,- with Tthc fingers-42 projecting through the; openings V 45, the working member maybe rotated to engage withthe por-j cause the fingers 42 to tions of the plate 44 that are between the openings 45 and vthereby clamp the plate 44 against the flange 39. .Thespring ifingers also serve asthe driving connection between the flange 39 and the plate 44,;the rotation of the shaft 38 being such connected position.

thatthe parts will However, when it iszdesi'red to. remove the member 16, the motor12 isstop'ped-andithe member 16 is turned whichit normally rotates, thusbringingrthe V fingers 42 into registration with -.theopen;

injthe direction in ings 45 and permitting the member 16 be withdrawn.

. The central dished" ortion f thepiat 44not only permits the member 16 to-eXt'end up into the'casing 10, ton position :clo'seto thepartition 17, but also provides a central cavity on the'top of the working'member', which is adapted to hold any greasethat may work-downwardly 'along the shaft38,-

thuskeeping this grease from dropping onto the floor. that'the openings 45 underlie the flange 39 and are closed by the latter due to the clamp- .In this connection, it will be noted aloe ing of the central portion of the plate 4st against the underside of the flange 39.

While we have illustrated and described what we now consider to be thepreterred 5 form ofour invention, it will be understood I that changes may be made in the details or" construction and arrangement without departing from the spirit of the invention, as

' 'definedin the appended claims.

7 10 I Having thus described our invention, what we claim is: v

1. In a machine of the character described, the combination of a casing having a bottom, s wall, a shaft projecting from the bottom wall of said casing, a flange on said shaft, a working member arranged below said bottom wall and having a central opening into which said shaft" projects, a centrally dished plate secured to said member and engaging the lower face of said flange, said plate having openings therein beneathsa-id flange, and spring fingers on said flange extending 7 through said openings and detachably connecting said-plate to said flange. 2. In amachine of the character described, the combination of a casing having a bottom wall. a shaft projecting from the bottom wall of said casing, a flange on said shaft having a central boss on itslower face, a working member arranged below said bottom wall and having a central opening into which said shaft projects, a centrally dished plate secured to said member and'having a I central opening to receive said boss and thereby locate saidworkingme nber in 00- aXial relation with said flange, said plate "also having a plurality of openings surrounding said central opening therein and so located as to be covered by said flange, and spring fingers on said flange each extending through one of said plurality of openings and detachably clamping said plate to said flange and through which s'aidniember is driven bysaid flange.

3. In a machine of the character described, the combination 'ofa casing, a driving shaft projecting through the bottom wall of said casing and having a driving flange thereon, a rotatable working member, a centrally 50 dished plate secured to said member and 1 having acentral opening through which said shaft projects, and'm'eans for clamping said 7 plate to said flange to form a driving con-, nection therebetween and to close said central opening so that lubricant which accumulates in the dished portionof said plate will be prevented from leaking through said. opening onto the surface on which said member operates. I y

In testimony whereof, we hereunto aflix oursignatures. r v FRED W. 'YUTZLER.

GORDON E. KENT. 

